饮料与染色瓷粉比色板色度的匹配性研究

Study on the matching of the shade between beverage and modifying porcelain shade guide

目的通过孟塞尔表色系研究饮料与染色瓷粉比色板色度的匹配性,为技工制作陶瓷修复体时选择染色瓷粉模拟天然牙的着色提供参考依据。方法采用分光光谱仪测量Vita Akzent、Vita Interno、Shofu Vintage&Unibond和Noritake Super Porcelain EX-3染色瓷粉比色板各比色片和15种饮料的孟塞尔色参数,比较其邻近色相、邻近明度和邻近彩度的差异,用双向无序行列表的Fisher确切概率法进行统计。结果15种饮料与4种染色瓷粉比色板邻近色相的频次差异有统计学意义(P<0.05),而邻近明度和邻近彩度的频次差异没有统计学意义(P>0.05)。结论4种染色瓷粉模拟15种饮料的着色除色相外没有区别,通过适当的色相、明度和彩度调配,4种染色瓷粉能够与15种饮料的色度大致相匹配。

Objective To evaluate the matching of the shade between beverage and modifying porcelain shade guide according to Munsell color order system, thus to provide the reference basis for selecting modifying porcelain to mimic the stain of natural tooth by technician. Methods The shade of Vita Akzent, Vita Interno, Shofu Vintage ＆ Unibond and Noritake Super Porcelain EX-3 shade tabs as well as 15 kinds of beverage were measured according to Munsell color order system on Color-Eye 7000A spectrophotometer. The difference of the frequency of approximate hue, value, and ehroma between shade tabs and beverage were compared by calculating the Fisher exact probabilities. Results The frequency of approximate hue between 4 kinds of shade tabs and 15 kinds of bev-erage was significant different （P〈0.05）, while the frequency of approximate value, and ehroma was not significant different （P〉0.05）. Conclusion Except the hue, the color distribution of 4 kinds of shade tabs was similar to that of 15 kinds of beverage. But the color of beverage also can be approximately matched by any kind of modifying porcelain by mixing porcelain powder of appropriate hue, value, and ehroma.